An investigation on the formation of cracks at the corner turns of the modular block earth walls
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Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer International Publishing Ag
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The design manuals for Geosynthetic Reinforced Soil Retaining Walls include the methodology for various conditions, except the case where the wall has a curved corner turn. Lately, some problems were reportedly associated with these types of walls. One of the typical problems is cracking/separation of the modular blocks. The most common method for analysing the behaviour of reinforced soil walls is a 2-D plane-strain analysis, which is insufficient for the current problem. Therefore, in this study, a 3-D finite-element (FE) model, that is capable of modelling corner turns, has been established. The main elements of the model are modular blocks, interface elements, soil, and reinforcements. As a first step, the performance of the FE model was evaluated by comparing the stress-strain response of a laboratory-scale wall with its counterpart in the FE program. Later, a large-size modular block wall model was created and run with various input parameters. The modelling results revealed that the reinforcement stiffness and the soil modulus are effective in the separation and cracking of blocks. It is considered that the cracking of blocks is related to an excessive stress build-up. These stresses reduced when the reinforcement stiffness increased. It is foreseen that the crack occurrence is less likely to happen under reduced stress.
Açıklama
Guler, Erol/0000-0002-3492-387X
WOS:000458209300006
WOS:000458209300006
Anahtar Kelimeler
Segmental Modular Block Walls, Tno Diana, Cracks, Corner Turns, Separation
Kaynak
International Journal Of Civil Engineering
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
17
Sayı
2B
